EP 0050832 A3 19820714 - A PROCESS OF COUPLING LIVING POLYMERS WITH GAMMA-HYDROXY ACID-LACTONES
Title (en)
A PROCESS OF COUPLING LIVING POLYMERS WITH GAMMA-HYDROXY ACID-LACTONES
Publication
Application
Priority
US 19976380 A 19801023
Abstract (en)
[origin: US4308364A] Lactones derived from gamma-hydroxy acids are employed as coupling agents for polymers derived from alkali metal-initiated polymerizations. These coupling agents provide effective coupling without formation of undesirable by-products.
IPC 1-7
IPC 8 full level
C08F 2/00 (2006.01); C08F 2/38 (2006.01); C08F 4/00 (2006.01); C08F 4/42 (2006.01); C08F 8/00 (2006.01); C08F 8/16 (2006.01)
CPC (source: EP US)
C08F 8/16 (2013.01 - EP US)
Citation (search report)
- [X] DD 138068 A1 19791010 - ANTON ELISABETH, et al
- [X] EP 0002012 A1 19790530 - PHILLIPS PETROLEUM CO [US]
- [AD] US 3627745 A 19711214 - HSIEH HEARY L, et al
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
US 4308364 A 19811229; AU 7561381 A 19820624; EP 0050832 A2 19820505; EP 0050832 A3 19820714; JP S5796004 A 19820615
DOCDB simple family (application)
US 19976380 A 19801023; AU 7561381 A 19810923; EP 81108619 A 19811021; JP 16558781 A 19811016